Adhesive.



UNITED STATES PATENT OFFICE.

GUSTAV J. GRUENDLER, OF s'r. Louis, MISSOURI.

ADHESIVE.

SPECIFICATION forming part of Letters Patent No. 633,834, datedSeptember 26, 1899. Application filed May 18, 1893. Serial No. 681,079.(No specimens.)

To a/M whom, it may concern; I

Be it known that I, GUsTAy J. GRUENDLER,

of the city of St. Louis, State of Missouri,

have invented certain new and useful Improvements in AdhesiveCompounds,of which the following is a full, clear, and exact description.

My composition consists of the following ingredients, combined in theproportions stated, viz: Schmierkase or Dutch cheese, one gallon;pulverized burnt lime, one pint. These ingredients are to be thoroughlymixed by stirring together or by being worked or kneaded. Theschmierkase or Dutch cheese is a product that can usually be obtained atdairies and the like. This Dutch cheese is made from sour milk, and ofcourse contains the customary proportion of lactic acid that forms aningredient of the sour milk. When the two ingredients have beenthoroughly com- Iningled and kneaded or stirred to a consistency ofordinary molasses, it is placed in a suitable air-tight receptacle to bekept until used.

The union of the lactic acid and the lime form calcic lactate, which Ihave found makes a cement that is much more durable than if the Dutchcheese were displaced by ordinary casein or old dry cheese. Furthermore,I

dry cheese is but'slightly soluble in water, while Dutch cheese is muchmore soluble in water, and can therefore be much more easily and quicklyworked.

The adhesive compound so formed is especially applicable for joiningtogether ordinary earthen tile with woodor it may be used for otherpurposes, and when it is used it is applied directly to the surfaces ofthe tile and wood thatare to be joined, and then said surfaces arebrought together and held in any suitable inanneruntilthe compoundhardens and becomes set. The compound enters or penetrates the pores ofthe wood and acts as a wood preservative, and said compound is perfectlywaterproof and will not be aiiected by either heat or moisture.

The compound is to be used cold, and when stored in an air-tightreceptacle it will keep for any'length of time in any climate.

I claiin- The herein-described adhesive, consisting of the dairy productknown as Dutch cheese containing the customary proportion of lacticacid,in combination with lime, substantially in the proportions hereinspecified.

In testimony whereof I affix my signature in presence of two witnesses.

GUSTAV J. GRUENDLER.

Witnesses:

EDWARD E. LONGAN,

M. P. SMITH.

